EP2321513B2 - Kolben für einen verbrennungsmotor - Google Patents
Kolben für einen verbrennungsmotor Download PDFInfo
- Publication number
- EP2321513B2 EP2321513B2 EP09776111.8A EP09776111A EP2321513B2 EP 2321513 B2 EP2321513 B2 EP 2321513B2 EP 09776111 A EP09776111 A EP 09776111A EP 2321513 B2 EP2321513 B2 EP 2321513B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- outer circumferential
- friction
- weld seam
- circumferential
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 238000003466 welding Methods 0.000 claims abstract description 6
- 239000011324 bead Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/16—Pistons having cooling means
- F02F3/20—Pistons having cooling means the means being a fluid flowing through or along piston
- F02F3/22—Pistons having cooling means the means being a fluid flowing through or along piston the fluid being liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/0015—Multi-part pistons
- F02F3/003—Multi-part pistons the parts being connected by casting, brazing, welding or clamping
Definitions
- the present invention relates to a piston for an internal combustion engine, having a piston lower part and a piston upper part, which are joined together by friction welding and form an outer circumferential cooling channel, wherein the piston upper part has an outer circumferential land land and a ring groove provided below the land ridge encircling ring whose inner wall delimits the peripheral outer cooling channel, wherein the upper piston part has an outer circumferential support element and the lower piston part has an outer circumferential support element, which form an outer circumferential friction weld below the annular part.
- a friction welded piston is also used in the US 2003/0051694 A1 shown.
- the JP 2003/025076 A discloses a generic piston whose supporting elements forming the outer friction weld are arranged radially inwards.
- the object of the present invention is thus to further develop a generic piston so that the risk of tension is reduced and the stability of the piston is improved.
- the solution consists in a piston with the features of claim 1. According to the invention it is provided that the width of the outer circumferential friction weld at most is just as large as the wall thickness between the respective groove bottom of the annular grooves and the inner wall of the ring section, and that in the peripheral outer cooling channel in the region of the outer peripheral friction weld a trough is formed, in which a weld bead is received.
- the width of the inner friction weld is less than previously known in the art. Nevertheless, the piston according to the invention is very stable for the reasons described above.
- the inner support element (27) of the upper piston part (12) and the inner support element (28) of the piston lower part (15) are formed such that along the inner circumferential friction weld (30, 130) in the outer circumferential cooling channel (19 ) and / or in the inner region (24) a trough (31) is formed, in which a Sch spawulst (32) is received.
- the piston lower part 15 has a piston shaft 14 and provided with hub bores 17 pin bosses 16.
- the piston upper part 12 has a piston bottom 13, which is provided in the exemplary embodiment with a combustion bowl 11.
- an outer circumferential fire bar 18 connects.
- a circumferential ring portion 20 is provided, which is provided in the embodiment with three circumferential annular grooves 21, 22, 23 for piston rings (not shown).
- the piston lower part 15 and the piston upper part 12 also together form an outer circumferential cooling channel 19.
- the inner friction weld 30 has a width b2, which in the embodiment according to the FIGS. 1 and 2A in the context of the usual manufacturing tolerances is smaller than the width b1 of the outer friction weld 29. But the width b2 can also be exactly as large as the width b1.
- the outer and inner support elements 26, 28 and 25, 27 of the lower piston part 15 and the piston upper part 12 are configured in the embodiment in the region of the friction welds 30, 29 such that the outer circumferential cooling channel 19 and the inner region 24 aligned, in the exemplary embodiment rotating , Troughs 31 are formed.
- the Sch undulste 32 are added, which may arise during the Reibsch dovorgangs.
- the surfaces of the walls of the cooling channel 19 are comparatively smooth.
- the volume of the cooling channel 19 for receiving cooling oil remains unaffected.
- the cooling oil in the cooling channel 19 can flow substantially without interference. The cooling effect of the cooling oil thus remains substantially preserved in this advantageous embodiment of the piston according to the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008045456A DE102008045456A1 (de) | 2008-09-02 | 2008-09-02 | Kolben für einen Verbrennungsmotor |
PCT/DE2009/001189 WO2010025703A1 (de) | 2008-09-02 | 2009-08-26 | Kolben für einen verbrennungsmotor |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2321513A1 EP2321513A1 (de) | 2011-05-18 |
EP2321513B1 EP2321513B1 (de) | 2012-02-01 |
EP2321513B2 true EP2321513B2 (de) | 2016-12-21 |
Family
ID=41606146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09776111.8A Not-in-force EP2321513B2 (de) | 2008-09-02 | 2009-08-26 | Kolben für einen verbrennungsmotor |
Country Status (8)
Country | Link |
---|---|
US (1) | US8434400B2 (ja) |
EP (1) | EP2321513B2 (ja) |
JP (1) | JP5631314B2 (ja) |
CN (1) | CN202165174U (ja) |
AT (1) | ATE543996T1 (ja) |
BR (1) | BRPI0918059A2 (ja) |
DE (1) | DE102008045456A1 (ja) |
WO (1) | WO2010025703A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010033879A1 (de) * | 2010-08-10 | 2012-02-16 | Mahle International Gmbh | Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor sowie Kolben für einen Verbrennungsmotor |
US9216474B2 (en) | 2012-04-24 | 2015-12-22 | Industrial Parts Depot, Llc | Two-piece friction-welded piston |
DE102012008947A1 (de) * | 2012-05-05 | 2013-11-07 | Mahle International Gmbh | Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor |
US9243709B2 (en) * | 2013-03-14 | 2016-01-26 | Mahle International Gmbh | Welded piston assembly |
CN103437898A (zh) * | 2013-09-22 | 2013-12-11 | 中国北方发动机研究所(天津) | 一种带环形槽的柴油机活塞 |
US10449621B2 (en) * | 2014-05-01 | 2019-10-22 | Mahle International Gmbh | Magnetic arc welded piston assembly |
US10711732B2 (en) * | 2017-01-19 | 2020-07-14 | Industrial Parts Depot, Llc | Reduced height piston |
CN114810410B (zh) * | 2022-05-10 | 2023-08-18 | 潍柴动力股份有限公司 | 一种活塞及发动机 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003025076A (ja) † | 2001-07-09 | 2003-01-28 | Riken Tanzou Kk | 内燃機関のピストン製造方法 |
US20030051694A1 (en) † | 2001-09-19 | 2003-03-20 | Federal-Mogul World Wide, Inc. | Closed gallery piston having con rod lubrication |
US6557514B1 (en) † | 2001-10-23 | 2003-05-06 | Federal-Mogul World Wide, Inc. | Closed gallery monobloc piston having oil drainage groove |
WO2007031107A1 (de) † | 2005-09-17 | 2007-03-22 | Ks Kolbenschmidt Gmbh | Kolben, insbesondere kühlkanalkolben, mit drei reibschweisszonen |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2537182A1 (de) * | 1975-08-21 | 1977-03-03 | Motoren Turbinen Union | Kolben |
US5769306A (en) * | 1996-05-31 | 1998-06-23 | The Boeing Company | Weld root closure method for friction stir welds |
US6213379B1 (en) * | 1997-08-27 | 2001-04-10 | Lockheed Martin Corporation | Friction plug welding |
US5934174A (en) * | 1998-10-02 | 1999-08-10 | Cummins Engine Company, Inc. | Lightweight articulated piston head and method of making the piston head |
DE10210570A1 (de) * | 2002-03-09 | 2003-09-18 | Mahle Gmbh | Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor |
DE10228103A1 (de) | 2002-06-24 | 2004-01-15 | Bayer Cropscience Ag | Fungizide Wirkstoffkombinationen |
DE10244512A1 (de) * | 2002-09-25 | 2004-04-15 | Mahle Gmbh | Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor |
US6825450B2 (en) * | 2002-11-06 | 2004-11-30 | Federal-Mogul World Wide, Inc. | Piston and method of manufacture |
DE10325914B4 (de) * | 2003-06-07 | 2012-08-02 | Mahle Gmbh | Kolben für einen Verbrennungsmotor |
US7563748B2 (en) | 2003-06-23 | 2009-07-21 | Cognis Ip Management Gmbh | Alcohol alkoxylate carriers for pesticide active ingredients |
US7005620B2 (en) * | 2003-11-04 | 2006-02-28 | Federal-Mogul World Wide, Inc. | Piston and method of manufacture |
US7104183B2 (en) * | 2004-07-07 | 2006-09-12 | Karl Schmidt Unisia, Inc. | One-piece steel piston |
DE102004061778A1 (de) * | 2004-09-29 | 2006-04-06 | Ks Kolbenschmidt Gmbh | Einfach-Reibschweißung |
JP2006150397A (ja) * | 2004-11-29 | 2006-06-15 | Hitachi Metals Ltd | リングプロジェクション溶接方法およびリングプロジェクション溶接部材 |
DE102006027354A1 (de) * | 2006-06-13 | 2007-12-20 | Mahle International Gmbh | Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor |
DE102007027162A1 (de) * | 2007-06-13 | 2008-12-18 | Mahle International Gmbh | Zweiteiliger Kolben für einen Verbrennungsmotor |
DE102008011922A1 (de) * | 2008-02-29 | 2009-09-03 | Ks Kolbenschmidt Gmbh | Kolben für Brennkraftmaschinen, hergestellt mittels eines Multi-Orbitalen Reibschweißverfahrens |
-
2008
- 2008-09-02 DE DE102008045456A patent/DE102008045456A1/de not_active Withdrawn
-
2009
- 2009-07-15 US US12/460,196 patent/US8434400B2/en not_active Expired - Fee Related
- 2009-08-26 EP EP09776111.8A patent/EP2321513B2/de not_active Not-in-force
- 2009-08-26 AT AT09776111T patent/ATE543996T1/de active
- 2009-08-26 BR BRPI0918059A patent/BRPI0918059A2/pt not_active Application Discontinuation
- 2009-08-26 CN CN2009901005768U patent/CN202165174U/zh not_active Expired - Lifetime
- 2009-08-26 JP JP2011525402A patent/JP5631314B2/ja not_active Expired - Fee Related
- 2009-08-26 WO PCT/DE2009/001189 patent/WO2010025703A1/de active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003025076A (ja) † | 2001-07-09 | 2003-01-28 | Riken Tanzou Kk | 内燃機関のピストン製造方法 |
US20030051694A1 (en) † | 2001-09-19 | 2003-03-20 | Federal-Mogul World Wide, Inc. | Closed gallery piston having con rod lubrication |
US6557514B1 (en) † | 2001-10-23 | 2003-05-06 | Federal-Mogul World Wide, Inc. | Closed gallery monobloc piston having oil drainage groove |
WO2007031107A1 (de) † | 2005-09-17 | 2007-03-22 | Ks Kolbenschmidt Gmbh | Kolben, insbesondere kühlkanalkolben, mit drei reibschweisszonen |
Also Published As
Publication number | Publication date |
---|---|
WO2010025703A1 (de) | 2010-03-11 |
BRPI0918059A2 (pt) | 2015-12-01 |
DE102008045456A1 (de) | 2010-03-04 |
CN202165174U (zh) | 2012-03-14 |
EP2321513B1 (de) | 2012-02-01 |
EP2321513A1 (de) | 2011-05-18 |
US8434400B2 (en) | 2013-05-07 |
JP5631314B2 (ja) | 2014-11-26 |
JP2012501408A (ja) | 2012-01-19 |
US20100050862A1 (en) | 2010-03-04 |
ATE543996T1 (de) | 2012-02-15 |
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